Quote:
quote:Originally posted by bross
You're absolutely right, the anode needs to be electrically connected to the tank in order for it to do its job. In cathodic protection, a metal anode that is more reactive to the corrosive environment of the system to be protected is electrically linked to the protected system, and partially corrodes or dissolves, which protects the metal of the system it is connected to.
I think that even if you are using teflon tape the threads of the anode will still come in contact with the tank but it's a simple matter to check for continuity using an ohm meter between the tank and the anode following installation.
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Local RV technicians corroborate the fact that the anode merely provides a chemical reaction to protect the tank of the water heater. They all use teflon tape on the replacement anodes, regardless of the threads making contact.
Orv